Poison dart frogs have fascinated researchers. Now their toxin has allegedly been linked to the death of Russian opposition leader Alexei Navalny.

The inbreeding, declining population of a frog tells the story of the state of South Carolina's wetlands.

Scientists once thought that a male frog dubbed Romeo was the last of his kind. Then, when more Sehuencas water frogs were discovered in 2018, they hoped he would mate with a female they called Juliet ...

The tragedy of Romeo began long before the frog found fame as the last of his kind. Starting in the 1970s, scientists started noticing something troubling in the amphibian world: the decline and, in ...

Russian opposition leader Alexei Navalny died in prison after being poisoned with a deadly toxin found in Ecuadorian dart ...

Russian opposition leader Alexei Navalny was poisoned by the Kremlin with a rare and lethal toxin found in the skin of poison dart frogs, five European countries s ...

The modern poison has become less a medieval cliché than a geopolitical signature flourish.

The toxin was found in the body of the Russian dissident Aleksei A. Navalny, who died in prison two years ago, five governments said, challenging Russia’s official account.

Alexei Navalny, the Russian opposition leader, died from a 'dart frog toxin,' the UK Foreign Office announced.

Keeping amphibians as pets offers hobbyists an opportunity to connect with the non-human world, often increasing interest in conserving animals in the wild. But there's a dark side to the amphibian ...

By Muvija M LONDON, Feb 14 (Reuters) - Five European allies on Saturday blamed Russia for killing late Kremlin critic Alexei Navalny using toxin from poison dart frogs while he was held in an Arctic ...

Russian opposition figure and outspoken Kremlin critic Alexey Navalny, who died two years ago, was killed while in prison by a lethal toxin found in poison dart frogs in South America, five European ...